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64 lines
2.0 KiB
SQL
64 lines
2.0 KiB
SQL
create database case_1_student_manager character set utf8;
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use case_1_student_manager;
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CREATE TABLE students (
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student_id INT PRIMARY KEY,
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student_name VARCHAR(100) COMMENT '学生姓名',
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major VARCHAR(100) COMMENT '专业',
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year_of_enrollment INT COMMENT '入学年份',
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student_age INT COMMENT '学生年龄'
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) COMMENT '学生信息表';
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CREATE TABLE courses (
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course_id INT PRIMARY KEY,
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course_name VARCHAR(100) COMMENT '课程名称',
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credit FLOAT COMMENT '学分'
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) COMMENT '课程信息表';
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CREATE TABLE scores (
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student_id INT,
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course_id INT,
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score INT COMMENT '得分',
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semester VARCHAR(50) COMMENT '学期',
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PRIMARY KEY (student_id, course_id),
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FOREIGN KEY (student_id) REFERENCES students(student_id),
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FOREIGN KEY (course_id) REFERENCES courses(course_id)
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) COMMENT '学生成绩表';
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INSERT INTO students (student_id, student_name, major, year_of_enrollment, student_age) VALUES
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(1, '张三', '计算机科学', 2020, 20),
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(2, '李四', '计算机科学', 2021, 19),
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(3, '王五', '物理学', 2020, 21),
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(4, '赵六', '数学', 2021, 19),
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(5, '周七', '计算机科学', 2022, 18),
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(6, '吴八', '物理学', 2020, 21),
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(7, '郑九', '数学', 2021, 19),
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(8, '孙十', '计算机科学', 2022, 18),
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(9, '刘十一', '物理学', 2020, 21),
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(10, '陈十二', '数学', 2021, 19);
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INSERT INTO courses (course_id, course_name, credit) VALUES
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(1, '计算机基础', 3),
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(2, '数据结构', 4),
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(3, '高等物理', 3),
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(4, '线性代数', 4),
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(5, '微积分', 5),
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(6, '编程语言', 4),
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(7, '量子力学', 3),
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(8, '概率论', 4),
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(9, '数据库系统', 4),
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(10, '计算机网络', 4);
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INSERT INTO scores (student_id, course_id, score, semester) VALUES
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(1, 1, 90, '2020年秋季'),
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(1, 2, 85, '2021年春季'),
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(2, 1, 88, '2021年秋季'),
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(2, 2, 90, '2022年春季'),
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(3, 3, 92, '2020年秋季'),
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(3, 4, 85, '2021年春季'),
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(4, 3, 88, '2021年秋季'),
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(4, 4, 86, '2022年春季'),
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(5, 1, 90, '2022年秋季'),
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(5, 2, 87, '2023年春季');
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